Factorise x2+9x+20x^2 + 9x + 20x2+9x+20
Solve x2+9x+20=0x^2 + 9x + 20 = 0x2+9x+20=0
Practise OCR GCSE Maths Solving Quadratics with exam-style questions for Foundation and Higher tier. 72 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.